If you look closely, the 1066 rated ballistix are 5-5-5-15 where as the 800 rated ballistix are 4-4-4-12 rated and they charge you twice the price for the 1066 memory. Good job there crucial. Being stupid gets expensive Just ordered 3 sets of tracers 4-4-4-12 800 from buy.com yesterday to replace my ocz's in my gaming machine and xms2's in the htpc.

As far as chipsets go, i was able to run 4-4-4-12 1t on my p35 chipset, but couldnt boot unless i went to 2t when i changed to my 680i board.